Using electronic ignition on the VAZ 2107 is much more effective than contact. To understand what advantages appear when installing a contactless system, it is necessary to briefly consider the history of its development. And, of course, it’s worth starting with a contact system, and it was with it that development began. It is also necessary to carefully study the main components of the ignition, to determine what functions they perform. It is also worth noting that the installation of electronic ignition allows to achieve higher power and reliability indicators of the entire car.
The main elements of the ignition system
The main elements include such as spark plugs, armored wires, coils. These are the nodes that are present in any system. True, they have some differences. Of course, the candles used on all engines are the same. When it comes to VAZ cars. Armor wires can be in both rubber and silicone shells. They have both pros and cons. For example, silicone is more prone to destruction of the internal conductive layer.
And the wires in the rubber sheath do not tolerate low temperatures well - they become hard, lose their elasticity. Ignition coils, although they have the same functions, are also different. If the breakdown voltage in the contact system should be 25-30 kV, then the electronic ignition system works at a value of this parameter of the order of 30-40 kV. And if in these two systems one coil is used, then the microprocessor ones are equipped with two or four. One coil for 1-2 candles.
Contact system
Such a design was popular until the mid 90s of the last century. But she went into oblivion, as she is morally obsolete. It is based on the ignition distributor, in which the rotor has a small section made in the form of a cam. With its help, the breaker is driven - two metal plates isolated from each other. They have contacts that close and open under the action of the cam.
The reliability of this system depends directly on the state of this contact group. The fact is that the contacts switch the voltage of 12 volts, therefore, the risk that they burn out is very high. They also touch, therefore, there is a mechanical effect. Hence, a decrease in the thickness of the contacts, therefore, an increase in the gap between them. For this reason, you need to constantly monitor the status of the contact group. But the electronic ignition system allows you to get rid of such minor flaws.
Contact transistor
This system is a little more perfect, but it is still far from ideal. As in the previous type, there is both a distributor and a contact group. With a slight difference - it commutes a small voltage, less than 1 Volt. More to control the electronic key assembled on a semiconductor transistor, and is not required. The advantage of this system becomes clear from the above. But the disadvantage still remains - there is a mechanical effect. Consequently, the contacts gradually wear out and require replacement. Long ride without timely maintenance. Although this is almost an electronic ignition on the VAZ 2107, it is still far from the BSZ.
Contactless system
But the contactless system is closer to the ideal. It does not have a contact group, which is the most vulnerable spot. Therefore, it will not be required to service it. All functions of the chopper are assigned to the Hall effect inductive sensor . It is mounted inside the distributor, in the very place where the group of contacts stood. For normal operation of the ignition system, the sensor must function correctly. And he will not be able to work without a metal skirt with slits that rotates in the region of his active element. The electronic ignition circuit has a high degree of reliability, largely due to the fact that it does not have a mechanical interaction of the elements.
Hall Sensor
When the engine is running, rotation is transmitted to the axis of the distributor. A slider rotates in its upper part, which distributes high voltage from the coil to the spark plugs. At the bottom is the previously mentioned metal skirt. It is located in such a way that it rotates in the range of the sensor. Therefore, the latter, under the influence of metal, gives out an impulse. And there are four such jumps in one revolution (by the number of cylinders). Further this impulse arrives to the switch. Installation of electronic ignition is quite fast, as it contains a small number of elements. Among them, it is worth highlighting the switch, but it will be discussed later.
Microprocessor system
This type of system is the most advanced. The reason is that it works by processing data from multiple sensors. It is actively used only on injection engines, since only in them it is possible to control fuel supply. Absolutely all engine operation parameters are monitored. The signals from the sensors are sent to the electronic control unit - the brain of the entire system. It is made on the basis of a microprocessor that can perform thousands of operations per second. This type of electronic ignition circuit is quite complex and also requires programming. After all, the microprocessor must know what the user wants from it with a certain type of input signal.
Sensors in a microprocessor system
As was said, in this type of ignition system, it is necessary to analyze all the parameters. In particular, with increasing requirements for toxicity, lambda probes began to be used with might and main. The microcontroller circuit of electronic ignition VAZ allows you to connect several types of readers. Of course, the use of lambda probes in cars is debatable, because it is worth looking at how many harmful gases and liquids are released by enterprises into the environment. But legislators in Europe are worried about this last. Injector sevens comply with Euro-2 and Euro-3 toxicity standards. Unfortunately, Euro-6 standards are currently in force.
For normal engine operation, control the speed, crankshaft speed, air entering the fuel rail. An analysis of the CO content in the exhaust system is also carried out, the position of the throttle valve relative to the starting point is determined. In addition, the presence of detonation in the engine is determined every second, the idle speed is adjusted . And all this is done by a system that is manufactured on a microprocessor. He conducts thousands of operations in order to timely send signals to actuators (for example, nozzle electrovalves). Since it is rather difficult to install electronic ignition of this type on carburetor engines, it is worthwhile to dwell on the use of BSZ.
Switch
This element is the predecessor of the microprocessor electronic control unit. Using the switch, a signal is supplied to the ignition coil. The only sensor that is involved in its work is Hall. With it, the moment of the beginning of the voltage supply is determined. True, the signal level that comes from the Hall sensor is very small. If it is fed to a high-voltage coil, then the voltage output to ignite the spark will not be enough. Incidentally, the electronic ignition 2106 can easily be mounted on the entire model range of the VAZ 2101-2107, since its installation is the same.
Therefore, there is a need to use a buffer unit - amplifier. It is these functions that the switch performs. During its operation, a large amount of heat is generated, so the installation of the unit should be approached with all responsibility. It must be mounted so that its back is as tight as possible to the body element of the car. Otherwise, a quick failure of the semiconductor system elements is possible. The plug used to connect the switch must be protected against dust and moisture.
How to install a distributor
Now it’s worth talking about how to mount and configure the electronic ignition for 2107. Installing the BSZ distributor in the classics is similar to the procedure for installing a simple distributor of a contact system. First, set the crankshaft pulley according to the marks on the engine block. There are three marks that determine the magnitude of the lead angle - 0, 5, 10 degrees. Install the pulley opposite the mark that corresponds to the value of 5 degrees. That it is the most optimal when working on gasoline with an octane rating of 92.
Now, having removed the distributor cover, set the slider so that it is opposite the output that goes to the candle of the first cylinder. Now it remains only to install the distributor housing in its place and gain the nut of its fastening. Next, put the distributor cover in place, clamp it with spring clips. That's all, the initial installation of the ignition is completed, now you can proceed to fine-tuning.
Setting the lead angle
Immediately it is worth noting that the adjustment "by ear" can be carried out, but only in the most emergency cases. For example, if a breakdown caught you on the road and you need to get to the place of repair. In other cases, you need to use at least simple means - for example, an indicator on the LED. It is best if the electronic ignition on the VAZ 2107 will be regulated using a stroboscope or a motor tester.
If you have a strobe, then the task of setting the ignition timing is much easier. By the way, such a device can even be assembled from an LED flashlight. Install the control terminal with a capacitive sensor on the armored wire of the first cylinder. Now you need to direct the strobe beam to the crankshaft pulley. Of course, the engine must be started. Rotating the distributor housing, ensure that the mark on the crankshaft passes opposite the corresponding serifs on the block clearly at the time of the flash.
What does the installation of BSZ on the seven give?
And now the praise of the contactless system will begin. It's no secret that electronic non-contact ignition is much better than its predecessor. The reason for this is that there is no need for frequent monitoring of the distributor and breaker. What does a modern driver need? To his car went, but did not require knowledge of him in the design of the car and its systems. Note that the more modern the machine, the less the owner intervenes in its operation. The maximum is the replacement of fluids and filters.
And BSZ took a step towards the drivers, it saved them from the need to constantly check gaps, adjust the angle of advance, clean contacts. Now there are a fairly large number of people who can distinguish a gearbox from a piston with great difficulty. Will he be able to do all the above procedures? Exactly. Therefore, electronic contactless ignition can increase the reliability of the car. And the need for frequent adjustments disappears.
findings
Analyzing all the pros and cons, we can come to one conclusion - the more modern the ignition system, the more reliable and efficient it is. But if you have a carburetor seven, then for the installation of a microprocessor system you will need to modernize the fuel supply. To do this, install a pump, a ramp, nozzles, an electronic control unit, as well as a bunch of sensors to ensure normal operation. But a simpler way out is to simply mount the electronic ignition on the VAZ 2107. And at a price not very much, and in terms of time too.